The human body has to protect itself from pathogens and infectious agents, and there are a variety of ways for the immune system to sense…



Summary

The human immune system defends the body against harmful pathogens through diverse detection mechanisms. These range from recognizing common microbial components (like LPS) via pattern recognition receptors (PRRs) to identifying infected cells displaying abnormal markers. Furthermore, the immune system senses cellular stress signals released during infection or tissue damage. This multifaceted approach allows for a comprehensive and adaptable response, enabling the body to effectively combat a wide array of threats and maintain overall health. The immune system’s ability to distinguish “self” from “non-self” is crucial for mounting targeted and appropriate defenses.

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